Turn-table lock



No. 020,500. Patented-Fab. 28, 1009;

0. BOHRBACH.

TURN TABLE LOCK.

(App ication filed. Aug. 9,1898.)

(No Model) //VVEN TOH By W ' A 7TOHNEYS.

WITNESSES UNITED STATES GABRIEL ROHRBACI-l,

PATENT OFFICE- or DEL RIO, TEXAS.

TURN-TABLE LOCK.

SPECIFICATION forming part of- Letters Patent No. 620,500, datedFebruary 28, 1899.

Application filed A g st 9, 1898- To all whom/- it may concern.-

Be it known that I, GABRIEL ROHRBACH, of Del Rio, in the county of ValVerde and State of Texas, have invented a new and Improved Turn-TableLook, of which the following is a full, clear, and exact description.

My invention relates to an improvement in looks for turn-tables ordevices for holding the turn-table in position, so that its rail endscorrespond with the rail ends of the fixed track.

My invention comprises the novel features hereinafter described andclaimed.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the figures.

Figure l is a top plan view of one end of a turn-table having my lockapplied thereto. Fig. 2 is a sectional elevation taken upon the line 2 2of Fig. 1; andFig. 3 is a sectional elevation showing theoperating-levers and latch, the same being taken upon the line 3 3 ofFig. 1.

In the drawings the supporting-frame or truss of the turn-table isrepresented by B,and the ties which support the rail by B. Upon thisframework the two lines of rails A are laid. The ends of these abutagainst the ends of the fixed rails A in the usual manner. Upon theinner side of each of the rails A, at their ends, is placeda locking-barD. The inner or rear ends of these bars are held in position bya guided. The outer ends of the levers are engaged by thetransversely-extending rods E. These rods engage the locking-bars D, soas to permit the locking-bars sliding through the same. As herein shown,the ends of the rods E are formed as yokes, the arms of which extendabove and below the locking-bars D.

The inner ends of the rods E or the ends toward the center of the trackare mounted to slide in guides E secured upon the turn.- table. Betweenthe guides E and the rails are placed other guides E, which surround therods E in such a manner that the rod may slide freely therein and have aslight vertical movement.

A spiral spring F surrounds each of the rods and bears against ashoulder or other Serial No. 688,212. (No model.

stop upon the rod and the outer guide E 3 These springs hold-the rods Eand the lockin g-bars D, mounted therein, against the side of the rail,but permit said locking-bars to be moved away from the rail a limitedamount.

The inner ends of the locking-bars D are ject beyond the track areprovided with operating-levers J, extending upward to a convenient pointfor manipulation. These are placed alongside of a frame K, upon which ispivoted a looking-latch L. This latch is pivoted between the extremeopposite positions of the levers. When swung into the position shown inFig. 3, the projections L upon the sides of the latch L are adapted toengage the rods J and limit their motion. When the rods J are thrownback, so as to engage the projections L upon the latch in the positionshown in Fig. 3, the locking-bars D are Withdrawn, sothat their outerends are even with the outer ends of the rails A. In this position theturn-table is free to swing. In the other position, or that shown inFig. 1,

both locking-bars are projected alongside of the rails J and theturn-table is fixedly held in position.

The frame K has projections is upon each side thereof adapted to engagethe levers J and limit their motion in one direction. The projections Lupon the latch L when swung over to the position shown in Fig. 1 and byfull lines in Fig. 2 press against the other side of the levers J, thetwo thus holding the levers against motion in either direction. Thelatch L is provided with a slot L in its outer end, which is adapted topass over a staple M, secured to the frame K. A look may be put throughthis staple and the levers locked in this position.

If the distance between the pivot 70 of the latch L and the projectionsL upon said latch is made sufficiently great to swing over the handles Jat the upper end of the levers J, the latch may be thrown down,.so thatthe projections L are upon the inner side of the levers J, and thus holdthe levers J in position corresponding with the withdrawn position ofthe locking-bars D.

The two locking-bars D are preferably mounted, as shown, so as to beoperated by separate levers. When the turn -table is swinging, one ofthe locking-bars D, being the one which first reaches the space be tweenthe rails A, may be forced out into position to engage the rail A. Itwill thus engage the side of the rail-A, and by reason of.

the spring F will gradually check the motion of the turn-table. As soonas the locking-bar D has come in contact with the rail A the otherlocking-bar may be forced outward. By this means the stopping of theturn-table may be accomplished without the shock or jar attending uponthe use of a positive and unyielding lock.

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patent- 1. A look for a turn-table, comprising alongitudinally-reciprocable and laterally-yielding lock-bar mountedalongside the rail, substantially as described.

2. A look for a turn-table, comprising a lock-bar mounted to slide alongthe side and to project beyond the end of the rail, a transverse rodhaving engagement with the lockbar, and a spring holding said rod andbar toward the rail, substantially as described.

3. A look for a turn-table, comprising a lock-bar lying along the innerside of each rail, spring-held guides engaging the outer parts of thelock-bars to hold them against the rails, and means for separatelyprojecting the lock-bars beyond the ends of the rails, substantially asdescribed.

4:. A look for turn-tables, comprising a bar lying along the inner sideof each rail, fixed guides for the inner ends thereof, spring-heldyielding guides for the outer ends thereof, and means for projectingsaid bars beyond the ends of the rails, substantially as described.

5. A look for turn-tables, comprising a bar lying along the inner sideof each rail, fixed guides forthe inner ends thereof, and springheldyielding guides for their outer ends, two cranked rods extendingtransversely the track beneath the rails, an operating-lever for eachrod, and connections from the cranks of each rod to its correspondinglock-bar, substantially as described.

6. A look for turn-tables, comprising a bar lying along the inner sideof each rail, fixed guides for the inner ends thereof, spring-heldyielding guides for the outer ends of said bars,two cranked rodsextending transversely the track beneath the rails, an operating-leverfor each rod, and a latch pivoted between the extreme position of saidlevers and having projections adapted to engage the levers in eitherposition.

7. A look for turn-tables, comprising a lockbar lying alongside eachrail and mounted to slide so as to be projected into contact with thefixed rails, two operating-levers and connections therefrom to thecorresponding lockbar, a latch pivoted between the extreme positions ofsaid levers and having projections adapted to engage the levers ineither position substantially as described.

GABRIEL ROI-IRBAOII.

Witnesses:

WILLIAM RAY, JOSEPH JONES.

